43results about How to "Strong concealment" patented technology

The invention provides a reinforcement learning-based sea-bird-imitating sea-land-air multi-terrain flapping-wing flying robot and a control method, the robot comprises a control cabin, an integration device and a wing device, the control cabin is mainly used for control, communication and detection of the robot, and the integration device is used for fixing the control cabin and the wing device. The wing device and the integration device are used for detection work of the robot on land, on the sea surface, under the sea and in the sky. Through the integrated design of the flapping wings imitating the sea sparrows, working modes can be freely switched in complex terrains such as land, sea surface, undersea and air, so that the robot can quickly adapt to different terrains according to task requirements, and high-efficiency, low-energy-consumption and long-time continuous detection tasks are achieved while high concealment is kept.

The invention relates to the technical field of robots, in particular to a spherical robot which comprises a spherical shell. A mounting cavity is formed in the spherical shell, and a first mounting opening and a second mounting opening which are communicated with the mounting cavity are formed in the outer wall of the spherical shell; a connecting rod is arranged in the mounting cavity, and a first connecting plate and a second connecting plate are correspondingly mounted at the two ends of the connecting rod respectively; the first connecting plate and the second connecting plate are correspondingly arranged in the first mounting opening and the second mounting opening respectively; a first motor is installed on the outer wall of the connecting rod, and the output end of the first motor faces upwards and is fixedly provided with a rotating disc. A bearing rod is fixed to the outer wall of the connecting rod, and a gravity block is fixed to the bottom of the bearing rod. And a first driving assembly and a second driving assembly are arranged on the outer wall of the connecting rod correspondingly. The device can be suitable for different terrains and is high in maneuverability, small in overall size and high in concealment.

The invention discloses a fault simulation universal wiring transformer device which is of an integrated structure, the phases are A, B and C, an iron core type can be switched between a three-phase three-column mode and a three-phase five-column mode, a primary side outgoing line terminal is at least provided with three capacitive type bushings with end screens, high-voltage and low-voltage coils are led to an outgoing line terminal panel, and the high-voltage and low-voltage coils are connected with the outgoing line terminal panel. Various wiring modes can be simulated at taps outside the panel, an adjustable resistor and an adjustable capacitor can be connected in series and in parallel at specific parts of the transformer, and various faults can be simulated by adjusting values of the adjustable resistor and the adjustable capacitor and controlling on and off of a switch. The system is wide in coverage, can simulate most abnormalities and faults of the transformer, and is remarkable in teaching and training effect. The fault setting concealment is high, and the mastering degree of students on the transformer fault test method is efficiently assessed; and a good safety protection effect is achieved on testers.

The invention belongs to the technical field of wireless communication and microwave antennas, and particularly discloses a transparent antenna for receiving ADS-B (Automatic Dependent Surveillance-Broadcast) signals, which comprises a phase delayer and is formed by matching a miniaturized coplanar waveguide feed inverted F transparent antenna and a coplanar waveguide feed bent line transparent antenna. The substrates of the two antennas are transparent acrylic substrates, and the antenna body structure and the grounding plate are made of an extremely fine metal grid structure used by film photoetching, so that the transparency of the antennas is ensured by the method. According to the invention, 83% of optical transparency in the working bandwidth can be realized, 1090MHz aircraft ADS-B signals can be received, the structure is simple, the size is small, the weight is light, and the concealment is strong.

The invention provides an aerial target height inversion method based on thermal infrared hyperspectral satellite data, which can be applied to the technical field of thermal infrared remote sensing. The method is applied to a height inversion system, the height inversion system comprises at least one height inversion model, and the method comprises the following steps: acquiring thermal infrared hyperspectral satellite data for an aerial target object; according to the thermal infrared hyperspectral satellite data, target object temperature, atmospheric condition information and background ground object information are determined, the atmospheric condition information represents atmospheric conditions of the position where the aerial target object is located, and the background ground object information represents information of background ground objects below the position where the aerial target object is located; determining a target height inversion model corresponding to the thermal infrared hyperspectral satellite data from at least one height inversion model according to the atmospheric condition information, the background ground feature information and the target object temperature; and inputting thermal infrared hyperspectral satellite data into the target height inversion model, and outputting a target height for the aerial target object.

The invention provides an innovation-based false data injection attack strategy generation method and system, and belongs to the technical field of information physical system security defense. The method comprises the following steps: acquiring priori knowledge of a cyber-physical system (CPS), and storing information modified by an attacker at the previous moment and system information at the current moment; collecting auxiliary information by using a sensor in the information physical system; constructing a false data injection attack strategy based on the information modified by the attacker at the previous moment, the system information at the current moment and the auxiliary information; according to the false data injection attack strategy, calculating an error covariance of attacked information; and representing the error covariance in a convex optimization form to obtain a covariance of a maximized remote estimation variance, and finally obtaining an information-based optimal attack strategy. According to the method, the optimal false data injection attack strategy can be generated on the basis of remarkably reducing the priori knowledge complexity of the system.

The invention discloses a generation type artificial intelligence safety test method and device based on emoji, and relates to the emoji text generation technology, and the method comprises the steps: constructing a safety keyword library module; constructing an emoji library module; a test case generation module; a test case evaluation module; the method is applied to artificial intelligence. By generating the mixed language test text containing the emoji, a content security case for the safety test of the generative artificial intelligence is constructed, and the content defense capability of the generative artificial intelligence when the emoji text is processed is systematically verified. By adopting the technical scheme of the invention, the anti-emoji avoidance capability of the content security mechanism of the generative intelligent system can be evaluated, and the security defense level of the generative artificial intelligence in a complex text scene can be effectively improved.

The invention discloses a cuttlefish-imitating robot. The cuttlefish-imitating robot comprises a robot head, a robot shell and a robot tail which are connected in sequence, the robot head and the robot tail are each provided with an electromagnetic valve used for spraying water outwards and sucking water inwards. The robot shell is made of a flexible waterproof material; an inner sealing body and a driving mechanism used for controlling the size of the robot shell to be increased and decreased are arranged in the robot shell. The cuttlefish-imitating jet propulsion robot can flexibly select a mode of head water absorption and tail water spraying or tail water absorption and head water spraying for propulsion according to actual conditions, and has higher maneuverability and propulsion efficiency compared with a traditional cuttlefish-imitating jet propulsion robot.

The invention relates to the technical field of garbage transfer, in particular to a lifting telescopic arm type garbage transfer device. According to the technical scheme, the device comprises a lifting platform, a supporting frame, a bearing seat and a rotation adjusting mechanism, comprises a toothed plate and a driving wheel which are meshed, and is driven by a motor to horizontally rotate; a garbage positioning mechanism is arranged above the toothed plate, comprises an inclined stand column, a mechanical arm and a first electric push rod and is used for adjusting the elevation angle of the mechanical arm, a middle extension arm and an end extension arm are arranged in the mechanical arm in a sliding mode, multi-stage stretching and retracting are achieved through driving of a second electric push rod, and a garbage can is installed below the end extension arm; the two ends of the lifting platform are connected with a U-shaped sliding plate and an I-shaped frame through mounting plates, a platform lifting mechanism driven by a third electric push rod is arranged below the I-shaped frame, and a grass planting platform is mounted at the top of the lifting platform through supporting columns. Integral lifting, direction adjustment, multi-stage stretching and precise discharging of the underground garbage transfer device are achieved, the structure is compact, operation is stable, and the landscape recovery function is achieved.

The application discloses a fault injection detection method based on random instructions and related devices, and relates to the technical field of information security. In the random instruction generation stage, the application applies a preset mathematical constraint code to one or more encoding bits of the random instruction, and injects the instruction carrying the encoding feature into a downstream operation or memory unit; when the downstream unit executes the instruction, it checks whether the actual calculation result conforms to the preset mathematical constraint code in parallel. If the check fails, it is determined that a fault injection attack has occurred. The application applies a preset encoding constraint to the random instruction, so that the random instruction itself carries verifiable fault detection information; the downstream module uses the encoding feature to perform fault injection detection in parallel, so that the random instruction has both side channel defense and fault injection detection functions. The detection logic is deeply integrated with normal instruction flow, has strong concealment, and is difficult to be evaded by attackers.

The invention relates to the technical field of aircraft navigation, in particular to a gravity gradient / SINS / starlight autonomous integrated navigation method. Establishing a gravity gradient / SINS / starlight autonomous integrated navigation system, wherein the gravity gradient / SINS / starlight autonomous integrated navigation system comprises a gravity gradient / SINS integrated navigation subsystem and a SINS / starlight integrated navigation subsystem; selecting east, north and sky geographic coordinate systems as navigation coordinate systems, and establishing a state equation and a measurement equation of the autonomous integrated navigation system; carrying out filtering solution on the integrated navigation system by adopting a set nonlinear filtering algorithm to obtain a state estimation value and a covariance matrix corresponding to each subsystem; fusing the state estimation values of the subsystems by using a fusion algorithm to obtain a global optimal estimation value; and correcting the error of the integrated navigation system in real time according to the global optimal estimated value. The autonomous integrated navigation system provided by the invention is high in navigation precision, strong in autonomy and good in reliability, and can meet the requirement of a long-distance long-endurance aircraft on the navigation precision.

The utility model relates to the field of secrecy cabinets, in particular to a steel secrecy cabinet which comprises a cabinet body, cabinet doors, a lock, a cabinet plate, a first baffle and a second baffle, the cabinet doors are symmetrically and rotatably arranged on the cabinet body, the lock is arranged on one set of cabinet doors, supporting blocks are arranged on two side plates in the cabinet body at intervals, and the supporting blocks are arranged on the two side plates in the cabinet body. A front cavity and a rear cavity are formed in the cabinet body, two sets of sliding grooves are formed in the bottom of the rear cavity, a mullion is arranged in the middle between the front cavity and the rear cavity, the first baffle is arranged in the sliding groove in the front side in a sliding mode, the second baffle is arranged in the sliding groove in the rear side in a sliding mode, and the right end face of the first baffle and the left end face of the second baffle are shielded through the mullion. The multiple sets of cabinet plates are arranged and located on the supporting blocks, the cabinet plates are located in the front cavity, inserting rods are arranged at the rear ends of the cabinet plate on the uppermost layer and the cabinet plate on the lowermost layer, and inserting holes matched with the inserting rods are formed in the first baffle and the second baffle.

The utility model relates to a door lock with a locking detection function and an intelligent vending refrigerator, and belongs to the technical field of refrigerating and freezing equipment. The door lock with the locking detection function comprises a lock hook, a lock body, a lock hook in-place monitoring assembly and a lock tongue position monitoring assembly. The lock body comprises a lock shell and a lock cylinder. The inner space of the lock shell is divided into a lock cylinder area and a lock hook connecting area. The lock cylinder is installed in the lock cylinder area and comprises a spring bolt which does linear reciprocating motion between a locking position and an unlocking position. The lock hook in-place monitoring assembly comprises a magnet and a magnetic sensor, the magnet is arranged in the lock hook, and the magnetic sensor is arranged in the lock cylinder area; the spring bolt position monitoring assembly comprises a shielding piece and a photoelectric sensor, the shielding piece is installed on the spring bolt so as to move along with the spring bolt, and the photoelectric sensor is arranged in the lock cylinder area. According to the door lock with the locking detection function, the in-place condition of the spring bolt is monitored, the in-place condition of the lock hook is also monitored, and the reliability of locking monitoring is improved.

The present invention belongs to the field of pattern recognition, machine learning, multi-task learning, and adversarial attack technology, and specifically relates to an attack and defense method based on feature manipulation for a continuous learning system, aiming to solve the problem of poor security and robustness of existing intelligent systems based on continuous learning. The method of the present invention comprises: obtaining a clean sample of an image; extracting features of the clean sample; obtaining a target sample and extracting features as target anchor features; generating adversarial samples through an attack sample generation algorithm based on the clean sample features and in combination with the target anchor features; training an image classification model through a continuous learning algorithm, and counting the classification accuracy corresponding to the clean sample during C-type task classification learning; adding a first matrix as a training sample in a ratio of 1:n, and retraining; classifying images based on the trained image classification model. The present invention improves the security and robustness of existing intelligent systems based on continuous learning.

The invention discloses a shield rapid deployment and retraction mechanism, comprising a shield rotation mechanism, a shield flipping mechanism and a shield translation mechanism; the shield rotation mechanism is mounted on a chassis, the shield flipping mechanism is mounted on the shield rotation mechanism, and the shield translation mechanism is mounted on the shield flipping mechanism; the shield rotation mechanism comprises a rotation frame, and the rotation frame can rotate relative to the chassis; the shield flipping mechanism comprises a flipping frame and a flipping electric push rod; the shield translation mechanism comprises an upper shield and an upper shield buffer frame; the upper shield and the upper shield buffer frame can rotate relative to the flipping frame. The shield rapid deployment and retraction mechanism designed by the invention has a simple structure, a high degree of automation, and can quickly realize the automatic deployment and retraction of the shield. After deployment and retraction, space can be saved, and three actions of rotation, flipping and translation can be performed simultaneously. The action is rapid and accurate, manpower is reduced, reliability is high, and the safety of personnel in dangerous environments is improved. It can be widely used in urban anti-terrorism, security protection, training exercises and other occasions.

The present invention relates to an elastically suspended bottom-seated submersible buoy device, comprising a buoy body and a jettisoning frame, wherein the buoy body comprises a float, a releaser and a bottom plate of the buoy body; the jettisoning frame comprises a suspension device and an elastic support device; wherein the float body is fixedly connected to the bottom plate of the buoy body, the releaser is placed inside the float body and fixedly connected to the bottom plate of the buoy body; the suspension device is connected to the releaser, and the elastic support device is connected to the suspension device. The bottom-seated submersible buoy device of the present invention has the advantages of reliable structure, miniaturization, strong concealment, high anti-salvage performance, and easy placement and recovery.

The invention discloses an on-line supervision system based on building construction safety and a supervision method thereof, and relates to the technical field of safety supervision, and the system comprises a protection shell, the bottom of the protection shell is fixedly connected with a loudspeaker, the top of the protection shell is fixedly connected with a warning lamp, and a solar panel is arranged above the warning lamp. The exterior of the protective shell of the construction alarm is set to be colorful, and the protective shell is installed in the forest on the periphery of the construction area, so that the concealment is high, non-constructors are effectively prevented from treading points to damage the alarm, and even if other construction alarms are damaged and the non-constructors successfully steal construction building materials at night, the construction alarms cannot be damaged. The construction alarms hidden on the periphery can give an alarm and reserve evidences, and the mimicry insect expelling mechanism is arranged to use folding blades to simulate the process of unfolding, flying and recycling of bird wings, so that small animals and insects in the forest can be effectively deterred, nesting in the protective shell is avoided, electronic parts in the protective shell are prevented from being damaged, and the safety of the forest is improved. And the service life of the construction alarm is prolonged.

The embodiment of the present invention provides a method, device and electronic device for adding anti-theft watermarks in data chart reports, belonging to the field of data processing technology, the method comprising: generating watermark data based on the characteristic vector KT=[T,NE,D,Dd]; embedding the visible watermark directly into the display area of ​​the chart, and embedding the invisible watermark into the chart data point by the formula Wi=E(K,Mi)⊕Di; extracting the invisible watermark from the chart data and graphic elements by using the preset key K and the decryption algorithm Df, and obtaining the watermark information Mi' embedded in the chart; calculating the drift distance Dp=H(Mi',Mi) between the extracted watermark information Mi' and the original watermark information Mi by the drift distance calculation function H(), and detecting whether the chart has been tampered with without authorization. The present invention enhances the security and anti-theft of chart data while maintaining the visual effect of the chart.

The utility model relates to a door lock with a defrosting function and an intelligent vending refrigerator, and belongs to the technical field of refrigerating and freezing equipment. The door lock with the defrosting function comprises a lock hook, a lock body, a temperature sensor, a heating piece and a control circuit board. The lock body comprises a lock shell and a lock cylinder. The inner space of the lock shell is divided into a lock cylinder area and a lock hook connecting area. The lock cylinder is installed in the lock cylinder area and comprises a spring bolt which does linear reciprocating motion between a locking position and an unlocking position. The temperature sensor is installed in the lock cylinder area and used for monitoring the temperature of the lock cylinder. The heating piece is arranged in the lock cylinder area and used for heating the lock cylinder. The control circuit board is provided with a processor, and the processor is electrically connected with the heating piece and the temperature sensor so as to control the heating piece to heat the lock cylinder when the temperature monitored by the temperature sensor is lower than the preset temperature. The door lock has the defrosting function, can avoid the frosting problem of the spring bolt, can be installed in a cabinet for use, and is high in safety.

The invention belongs to the technical field of antennas, and relates to a fan-shaped dipole antenna, which comprises a rectangular dielectric layer and a radiation layer arranged on the dielectric layer, the radiation layer comprises two fan-shaped radiation patches which are distributed in an axial symmetry manner relative to any symmetry axis of the dielectric layer, and the two radiation patches are used as two oscillators of the dipole antenna; the two radiation patches are arranged at an interval, and the feed structure is loaded in the interval between the two radiation patches; the central angle of the sector on the radiation patch is an acute angle. The bandwidth of the ultra-wideband antenna can be expanded, and the ultra-wideband antenna is simple in structure and convenient to process.

The invention belongs to the field of optical communication transmission, and particularly discloses an invisible easy-to-construct double-core butterfly-shaped optical cable which comprises a cable core, and the cable core comprises two optical fibers arranged in parallel at intervals and an inner sheath wrapping the two optical fibers; a mounting cavity for mounting the inner sheath is formed in the outer sheath along the axis extension direction of the outer sheath; the outer peripheral surface of the outer sheath is provided with a cable opening groove which is arranged along the extension direction of the axis of the outer sheath. A separation groove communicated with the mounting cavity is formed in the outer sheath in the axis extending direction of the outer sheath, and the cable opening groove extends towards the axis of the outer sheath in the radial direction of the outer sheath so as to be communicated with the separation groove. The outer sheath of the double-core butterfly-shaped optical cable is provided with the cable opening groove, the cable opening groove is cut by a blade, and the cable opening groove is communicated with the separation groove after being opened, so that the outer sheath is conveniently opened, separation of the inner sheath and the outer sheath is realized, the depth of the blade entering the outer sheath can be reduced, the blade does not contact with the inner sheath outside the optical fiber, and the service life of the optical fiber is prolonged. And the inner sheath can be prevented from being damaged.

The utility model relates to a vehicle-mounted storage device with wireless charging and display functions, which comprises a storage box body with a storage space, a screen display module and a wireless charging module are arranged on one side of the storage box body, the screen display module is movably connected with the storage box body, one end of the screen display module is connected with a PFC (Power Factor Correction) wire, and the other end of the screen display module is connected with the wireless charging module. A system PCBA is installed on the inner side wall of the storage box body, and the FPC wire is electrically connected with the system PCBA. The utility model has the beneficial effects of strong concealment, capability of improving the utilization rate of the space in the vehicle, and wireless charging function.

The utility model relates to clothing processing technical field, concretely relates to a kind of high-breathability POLO shirt including main fabric front piece, high-breathability mesh front piece, main fabric back piece, high-breathability mesh back piece, double-layer sleeve piece, lapel, door front, underarm air guide structure, back center air guide belt and breathable split, main fabric front piece and high-breathability mesh front piece are spliced and set in POLO shirt front body, main fabric back piece and high-breathability mesh back piece are spliced and set in POLO shirt back body, high-breathability mesh front piece and high-breathability mesh back piece are respectively located in the lower area of POLO shirt, double-layer sleeve piece adopts double-layer structure, inner layer is high-breathability layer, outer layer is main fabric, and form underarm air guide structure in underarm part;POLO shirt back center is provided with the back center air guide belt that penetrates shoulder to lower hem;Lower hem is provided with breathable split, the utility model aims at solving the problems, such as insufficient breathability in high heat area, single structure, poor perspiration effect and lower wearing comfort of existing POLO shirt.

The invention discloses a method and a system for testing a client in a local area network, relates to the technical field of network security, and can realize security testing of the client in the local area network. The method is applied to a test device in a test system, the test system further comprises a plurality of clients, the clients are located in the same local area network, the test device is not located in the local area network, and the method comprises the steps that after an operation authority of a target client in the clients is obtained, a target program is sent to the target client, the target program comprises a named pipeline file and a first socket 5 service program, and the first socket 5 service program is used for monitoring the named pipeline file; after connection with a target client is established based on an SMB protocol, scanning data are written into a named pipeline file, and the scanning data comprise a forwarding instruction and scanning traffic, so that a first socket 5 service program in the target client forwards the scanning traffic to other clients in a local area network according to the forwarding instruction after monitoring the scanning data. And scanning detection is carried out on other clients.

A water-filled spherical shell sonar clock device in water comprises: an elastic spherical shell made of stainless steel, with at least one water injection hole and at least one air outlet hole on the surface; and a water injection device for injecting a preset amount of water into the elastic spherical shell through the water injection hole. The present invention utilizes the unique intermediate frequency matching resonance characteristics of the elastic spherical shell in water, regulates the intermediate frequency matching resonance characteristics by adjusting the thickness of the spherical shell, the water filling degree and the internal horizontal plank structure, constructs a classification and recognition model in combination with a BP neural network, establishes a mapping relationship between the sonar clock structure and its echo sound identification, and realizes passive sound identification based on the spherical shell sonar clock device, and has a small size, strong echo, a wide range of applicable frequency bands, no need to carry external energy, and has the advantages of good durability and strong concealment. It is suitable for marking surface and underwater navigation targets, position marking and tracking of underwater sunken ships, oil and gas pipelines and other structures, as well as underwater navigation and positioning of underwater vehicles and surface ships.

The utility model discloses an anti-theft network camera for public safety, which relates to the field, solves the problem that an existing device is difficult to effectively prevent a network camera seat from being stolen according to requirements, and adopts the following scheme that the anti-theft network camera comprises the network camera seat and a mounting seat at the top of the network camera seat, bolt seats are fixedly welded to the top and the bottom of the mounting seat; a built-in groove is formed in the center of the top of the mounting seat, and an alarm is fixedly mounted in the built-in groove; according to the anti-theft network camera for public safety, through the arrangement of the components in the mounting seat, when the camera is mounted, a bolt component penetrates through a through hole to be hung on a top plate, at the moment, a fastening bolt is arranged between a contact head and a contact seat at an interval, and when the camera is stolen, the contact head is directly contacted with the contact seat under the influence of the elastic force of an elastic sheet; and the alarm in the mounting seat is synchronously triggered to give an alarm, so that the whole network camera seat gives out harsh alarm sound, and an abnormal signal is sent to a local area network at the same time.

The invention relates to a high-security batch image steganography method, which comprises the following steps of: randomly generating n chromosomes, sequencing input images according to the n chromosomes, and generating n groups of images; combining each group of images into a large image, namely a carrier image, and embedding secret information into the large image to obtain n pairs of carrier images and secret images; calculating the similarity between each pair of carrier image and secret image, and selecting the chromosome with the highest similarity as an optimal individual; cloning an optimal individual for t times, selecting n-t individuals from the population according to a similarity measurement value of each pair of carrier images and secret images, performing crossover and mutation operation to obtain n-t optimized individuals, and finally combining t optimal clones with the n-t optimized individuals to form a next-generation population; and repeating selection, crossover and mutation operations, recording the optimal individual of each generation, and taking the chromosome with the highest similarity measurement value as the output of an image stitching scheme ISS.

The utility model relates to the technical field of buried wire box, especially building brightening engineering concealed buried wire box, its enhancement concealment, it is convenient to distinguish overhauls, can accurately find, save effort, greatly saved maintenance time, including junction box, multiple baffle, wiring component, pullout component, support component and reinforcing component, a plurality of incoming and outgoing line holes are set up on the left and right two end side walls of junction box, a plurality of baffles are installed in the incoming and outgoing line hole, the wiring component is installed in the junction box inside through the pullout component, the support component is installed at the rear side of wiring component, and the reinforcing component is installed on the outer wall of junction box.

The present invention belongs to the field of polar acoustic technology, and specifically relates to a method and device for locating pulse sound sources on ice using a single vector hydrophone, and performing cross-ice positioning in sea areas covered by polar sea ice. Existing methods cannot well realize the construction of a three-dimensional observation platform in polar regions, and it is necessary to develop new communication technologies to overcome this problem and improve the information transmission capabilities between submarines and other communication equipment. Based on the theory of polar sound propagation, the present invention explores the mapping relationship between the arrival time of different modal wave fields and the spatial position of the sound source, and utilizes the characteristics of the vector hydrophone that can simultaneously receive the amplitude and direction information of the sound wave velocity, and implements the evaluation of the height and distance of the air pulse sound source based on a single array element. The signal attenuation in a complex ice and water environment is reduced, and the signal propagation quality is improved. The cross-medium detection of airborne sound sources underwater can be realized more covertly, while reducing costs and construction risks.